高中英语主语从句 6页

Unit3主语从句(BookIII)ByWangHaiyan主语从句定义：主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。引导主语从句的有连词that，whether，if，连接代词who，what，which，连接副词when，where，how，why等。1．从属连词：that，whether，if等.that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Whether,if“是否”。Thatpeoplecutdowntoomanytreesdestroyedthebalanceofnature.Whetheryoucansignuponlineisnotcertain.Whetherwecanhaveasportsmeetornotwasnotclear.Itwasnotclearwhetherwecanhaveasportsmeetornot.Conclusion:引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.注意:由that引导的主语从句有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:1.Thathewillrefusethispieceofadviceisimpossible._________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________这样就构成了下面一些常用句型:1)Itis+n.+从句　Itisapity/shamethat...遗憾的是……　Itisasurprisethat…令人惊奇的是…　Itisafactthat……是事实Itiscommonknowledgethat……是常识*_______________(很遗憾)welostthematch.*______________(这是事实)hecheatedintheexam.2)Itis+adj.+从句　It’scertainthat…肯定…　Itispossiblethat...很可能……　Itisunlikelythat...不可能……Itisobviousthat…很明显…Itisnecessary\important\natural\...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(肯定)wecanpasstheexam.主语从句的虚拟语气①表“应该，惊讶、惋惜、遗憾”等意义\nItisimportant/natural/necessary/impossible/strangethat...谓语形式为:should+V.原形,should可省略。eg.很奇怪，他竟没有来。Itisstrangethat___________________.我们做足够的运动很重要。重要的是我们应该做足够的运动Itisimportantthatweshoulddoenoughsports.②表示“据建议、据要求、据命令”It+be+suggested/advised/ordered/requested/commanded/insisted/requiredthat…谓语形式:should+V.原形,should可省略.据命令，所有乘客必须接受搜查___________________allthepassengers_____________________.3)It+不及物动词+从句Ithappenedthat...碰巧……Itoccurredtomethat…我突然想起…*________________(刚好)Icameintotheofficeatthattime.*____________________(我突然想起)Iforgettosenttheletter.4)It+be+过去分词+从句Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据信……;人们相信……Itissuggestedthat+(should）do...建议……Itmustbeadmittedthat…必须承认……Itcannotbedeniedthat…不可否认……　　Itmustbepointedoutthat…需指出的是……　*___________________(据报道)20peoplewerekilledintheaccident.*______________________(建议)weshouldeatmorevegetableanddomoreexercise.5)“无关紧要（的是）”Itdoesn’tmatter+主语从句Itmakesnodifference+主语从句翻译：一个人是否富有无关紧要_____________________oneiswealthyornot.TorFquestionsTheyshouldlikeeachotherisnatural.()Thattheyshouldlikeeachotherisnatural.()Itisnaturalthattheyshouldlikeeachother.()Ifyoucansignuponlineisnotcertain.()Itisnotcertainifyoucansignuponline.()2.连接代词who，what，which,whatever,whichever,whoeverWhowilltakepartinthemeetinghasnotbeendecided.Whoeverbreaksthelawwillbepunished.Whichstudentwillwinthefirstisuncertain.\nWhathesaidisnotimportant.3．连接副词when，where，how，why等。Whytheysuddenlydisappearedstillremainsamystery.Whentheywillsetoffisnotdecided.Wheresheisfromisunknown.Howwewillpaintthehousehasnotbeendecided.Completethesentencesusingwhat,whether,where,when，who,why,howorthat.1.(_____isneededforsuccess)isyourhardwork.2.(theywillarrive)hasbeentoldtotheteacher.3.(wewillgotomorrow)hasn’tbeendecidedyet.4.(______canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.6.(____theearthisbecomingwarm)isagoodtopicforresearch.7.(______theearthisasolidball)isknowntousall.Conclusion:主语从句作主语时，谓语动词一般用单数形式。Summary:SubjectClause1.用that/whether/if//where/how/when/why/who/what/which/howmuch/etc.来连接主语从句.2.That在主语从句中不能省略.3.引导主语从句在句首只能用whether,有it作形式主语的whether/if都可以.4.有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面.4种句型。5.主语从句作主语时，谓语动词一般用单数形式。课堂作业：1._____weneedmorepracticeisquiteobvious.A.WhatB.ThatC.WhenD./2._______theycansolvethequestionisstillunknown.A.IfB.WhichC.WhetherD.What3._____hesaidatthemeetingastonishedeverybody.A.WhyB.WhatC.ThatD.Who4.____isafactthatEnglishisacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.ItStepFour:Consolidationandpractice（14mins）Pickuponenumberandfinishthetaskinit,thenyoucangetsomepoints.12345678910\n1112131.Correctornot?Whenthemeetingwillbeheldhaven’tbeenknownyet.…………………………….beheldhasn’tbeenknownyet.Payattention:主语从句的谓语用单数形式2.MakeasentenceWhat,thecatdo,made,cryWhatthecatdidmadethebabycry.3.用whether\if填空1).Thequestionis________thefilmisworthseeing.2).________weshallattendthemeetinghasn'tbeendecidedyet.4.TranslatethesentenceThattheyneedhelp*___________________(他们需要帮助)isquiteclear.5.Makeasentencetalkabout,theuseof,cellphone,Whattheyaretalkingaboutistheuseofcellphone.6.Correctornot?Ifwewillhaveameetinghasn’tbeendecidedyet.Whetherwewill………………………….decidedyet.Payattention:放在名词性从句句首，表示“是否”，只能用whether,不能用if7.TranslatethesentenceItisknowntous_____________________________________(马克.吐温怎样成为一位伟大的作家).8.Makeasentencereport,getthehighestpoints,matchItisreportedthatYaoMinggotthehighestpointsinthematch.9.Correctornot?Itisimportantthatwewillfinishtheworkontime.Itisimportantthatweshouldfinish…..Payattention:注意虚拟语气在名词性从句中的使用！在Itisnecessary\important\natural\...that…句型中，从句的谓语要用should+do的形式10.Correctornot?Thatshewantstoknowiswhenthepartywillbeheld.Whatshewantstoknowis…….Payattention:此主语从句缺少成分-宾语，故用作成分的what来引导，而不用that。11.Correctornot?Hewillgiveuphisjobsurprisesallofus.Thathewillgiveup………Payattention:由that引导的主语从句放在句首，that不能省略。12.TranslatethesentenceWhethershewillattendthemeeting\n_____________________________（她是否出席会议）isnotcertain.13.MakeasentenceDon’tknowtheanswer,teacher,angryItmakestheteacherangrythatthechilddoesn’tknowtheanswer. Homework:1.________makesmistakesmustcorrectthem.A.WhatB.ThatC.WhoeverD.Whatever2.Itworriedherabit____herhairwasturninggrey.A.whileB.thatC.ifD.for3.Whenandwhyhecamehere________yet.A.isnotknownB.arenotknownC.hasnotknownD.havenotknown4.________isnoreasonfordismissingher.A.BecauseshewasafewminuteslateB.OwingtoafewminuteslateC.ThefactthatshewasafewminuteslateD.Beingafewminuteslate5.________Tomlikedtoeatwasdifferentfrom________.A.That…thatyouhadexpectedB.What…thatyouhadexpectedC.That…whatyouhadexpectedD.What…whatyouhadexpected6.________wegoswimmingeveryday________usalotofgood.A.If...doB.That...doC.If...doesD.That...does7.It________Bobdrivesbadly.A.thinksthatB.isthoughtwhatC.thoughtthatD.isthoughtthat8.It'suncertain________theexperimentisworthdoing.A.ifB.thatC.whetherD.how9.________theboydidn'ttakemedicinemadehismotherangry.A.ThatB.WhatC.HowD.Which10.____wecan'tgetseemsbetterthan____wehave.A.What,whatB.What,thatC.That,thatD.That,what11.____youdon'tlikehimisnoneofmybusiness.A.WhatB.WhoC.ThatD.Whether12..____we'llgocampingtomorrowdependsontheweather.A.IfB.WhetherC.ThatD.Where13._________isgoingtodothejobwillbedecidedbythePartycommittee.A.ThatB.WhyC.HowD.Who14._______we'llfinishtranslatingthebookdependsonthetime.A.WhenB.WhyC.WhatD.That15.______hewon'tgothereiscleartoallofus.A.HowB.WhatC.WhyD.This\n16.______thehousewillbebuiltwillbediscussedattomorrow'smeeting.A.IfB.WhereC.ThatD.What17.._______youcomeornotisuptoyou.A.WhatB.IfC.WhyD.Whether18.._______makesmistakesmustcorrectthem.A.WhoB.AnyoneC.WhoeverD.Anybody19.._______teamwillwinthematchisamatterofpublicconcern.A.WhichB.ThatC.IfD.How20..________leavestheroomlastoughttoturnoffthelights.A.AnyoneB.ThepersonC.WhoeverD.Who